What is the thing that is in some home bathrooms and is like a ladder (you can see it in the picture)? What is it called? What is it there for?
That ladder like thing in a bathroom area is a combination towel rack and heater. The heater is generally used to warm and/or dry the towels but can also lend to taking the chill off the bathroom.
It has been my experience to see those mostly in Europe and I cannot actually remember ever seeing one installed in the US but I am sure they are used here.
It's a towel warmer. You hang the towel like on a standard bar, and the heat elements keep the towel warm all over.